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ce can conduct electricity in molten or/ and solid state.

Type of substance

Bulb condition

Type of electrode, voltage, mass of substan

ance that can conduct electricity in molten state but cann

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Melting point of substance X is 120

liquid

Solid and liquid

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120 C

Solid and liquid

Boiling point of distilled water with common

salt will increase.

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metal

Non-metal

Metal can conduct electricity but non-metal cannot.

Voltage, length of rod

Type of material

Copper

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proton

electron

2

4

proton

neutron

electron

Substances that have same roton number but different

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Group

Period

Increasing number of proton number

5

1 23 X 4 5

Non-metal

NeonColoured light bulb

HeliumTo fill balloon